1. Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
2. Department of Theriogenology, Faculty of Veterinary Medicine, Benha University, Kaliobeya, Egypt
3. Department of Animal Reproduction and Artificial Insemination, Veterinary Research Division, National Research Centre, Cairo 12622, Egypt
4. Preclinic Department, Faculty of Veterinary Science, Kabul University, Kabul, Afghanistan
5. Laboratory of Veterinary Pharmacology, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
6. Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan